Home / 15,509.51-21,403.14-8,795.17

Finding the Fourth Proportional to 15,509.51, 21,403.14 and 8,795.17

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Solution

The fourth proportional to 15,509.51, 21,403.14 and 8,795.17 is: 12,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.51 : 21,403.14 = 8,795.17 : x
  2. Step 2: Convert to fraction form
    15,509.51/21,403.14 = 8,795.17/x
  3. Step 3: Cross multiply
    15,509.51x = 21,403.14 × 8,795.17
  4. Step 4: Simplify right side
    15,509.51x = 188,244,128.21
  5. Step 5: Solve for x
    x = 188,244,128.21/15,509.51
  6. Step 6: Final answer
    x = 12,137.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.